Anlysis And Study For Electronic Controlled System Of High Pressure Common Rail Diesel

As general energy crisis become more and more serious and increasingly rigorous emission legislation, it is necessary for diesel to be developed with lower pollution, lower fuel consumption and high power per weigh. Furthermore, with the development of microcontroller and electronic controlled technology, the diesel using ECU can detect its working parameters at any moment and provides optimal injection timings, fuel injection quantity and injection pressure through calculation of running program. Thus, it improves fuel combustion in diesel cylinder and keeps the good performance of power, economic and exhaust of diesel. Electronic controlled high pressure common rail is one of the three breakthroughs of internal-combustion engine industry in the end of 21st century. It is able to complete the desired fuel injection rate. It is commonly considered to be one of the most effective and economical measurement to resolve the problems of saving energy and protecting environment. At present, studying ECU has become hotspots in the high-pressure common rail diesel system.The paper deeply analyses and studies the EDC16 in the working principle, the construction, the design of hardware & software and the control strategy. Firstly, the peripheral components (sensors & driver devices) of system are introduced. The article also analyses the I/O signal processing circuits, the functional blocks of MPC562 and its application in ECU, and shows the detailed design of CAN-bus communication node. Secondly, it gives the real-time operating system osCAN which complies with the OSEK/VDX specification. The task assignment, task code, and the procedures of detecting the crankshaft signal are provided. Through...